Dental chair



FIG. 1 is a perspective view of the dental chair showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left-side elevation view thereof, the right-side elevation view being a mirror image;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 a bottom plan view thereof.

The broken lines in the figures of the dental chair are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a dental chair, as shown and described. 